I made a salad with only herbs.

This joke is a delightful example of wordplay, specifically a pun, where the humor hinges on the phonetic similarity between two different words. The setup describes making a salad exclusively from herbs, which might sound a bit odd, but it cleverly sets the stage for the punchline. The comedic twist comes from swapping the herb "thyme" for the word "time," playing on the common idiom "too much time on one's hands." It's the kind of linguistic trick that makes you groan and smile at the same time, appreciating the cleverness of language.

Thyme is, of course, a fragrant and widely used culinary herb, a staple in many kitchens for seasoning and adding flavor to dishes, or indeed, making a very specialized salad. The idiom "too much time on one's hands" is a familiar expression used to describe having an excess of free time, often implying boredom or the inclination to engage in frivolous activities. The joke brilliantly merges these two distinct ideas – a kitchen ingredient and a state of leisure – into a single, chuckle-inducing statement, creating an absurd but perfectly understandable scenario.